{"uid":"cap_7Z_p0BX6nmCQTMgGZAy6v","slug":"cryptofeed402-btc-perpetuals-data-6b301ed8","name":"cryptofeed402 BTC Perpetuals Data","description":"AI-to-AI crypto data. Paid routes use x402 (USDC on Base mainnet eip155:8453, asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913); unpaid calls return 402 with payment requirements. Not financial advice.","url":"https://cryptofeed402.site/perps/BTC?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"as_of":"2026-10-19T20:57:31.782Z","venue":"hyperliquid","mid_px":111655,"symbol":"BTC","venues":[{"venue":"hyperliquid","symbol":"BTC","mark_px":111650,"funding_rate":-0.0000052,"funding_apr_pct":-4.56,"open_interest_usd":3461000000,"funding_interval_hours":1}],"funding":{"rate_8h":-0.0000416,"rate_hourly":-0.0000052,"side_paying":"shorts","annualized_pct":-4.56,"interval_hours":1},"mark_px":111650,"premium":-0.00031,"impact_px":{"ask":111660,"bid":111640},"oracle_px":111700,"disclaimer":"Automated data for AI agents. Not financial advice.","premium_pct":-0.031,"generated_at":"2026-10-19T20:57:31.790Z","max_leverage":40,"open_interest":{"usd":3461000000,"coins":31000.5},"change_24h_pct":1.2,"volume_24h_usd":2100000000,"funding_extreme":{"rank":8,"top10":["SAND","XMR"],"in_top10":true,"ranked_universe":67}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_ZN4YCmb1TmkRatx4yfiHa","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a real-time snapshot of BTC perpetual futures data from Hyperliquid, including mark price, funding rate, open interest, 24h volume, and leverage info.","exampleAgentPrompt":"What's the current BTC perp funding rate and open interest on Hyperliquid — is funding extreme relative to other coins right now?","exampleUseCases":[{"title":"Funding rate arbitrage signal detection","prompt":"Check the current BTC perp funding rate on Hyperliquid and tell me if it's in the top 10 most extreme funding rates right now — I want to know whether shorts or longs are paying."},{"title":"Real-time perp dashboard for trading bot","prompt":"Pull me a full BTC perpetual futures snapshot from Hyperliquid — I need mark price, oracle price, funding rate, open interest, and 24h volume right now."},{"title":"Portfolio risk monitoring for leveraged positions","prompt":"What's the current BTC perp mark price and max available leverage on Hyperliquid, and how much has BTC moved in the last 24 hours?"}],"resultDescription":"A JSON object with real-time BTC perp data including: mark price, oracle price, mid price, premium and premium percentage, funding rate (hourly, 8h, annualized APR), which side is paying funding, open interest in USD and BTC, 24h volume in USD, 24h price change percentage, max leverage, impact bid/ask prices, funding extremity rank among tracked coins, and a timestamp.","failureModes":["402 Payment Required — returned when no valid x402 USDC payment on Base mainnet is provided; response includes payment requirements","Invalid or unsupported symbol — endpoint may return 404 or error if a non-BTC symbol is used at this path","Stale or unavailable data — upstream Hyperliquid data may be temporarily unavailable, resulting in error or outdated as_of timestamp","Network timeout — if Hyperliquid upstream is slow, response may be delayed"],"whenToPreferThis":"Choose this endpoint when you need real-time BTC perpetual futures data from Hyperliquid specifically, including funding rates, open interest, and leverage info, and you are operating in an x402-capable agent environment that can pay $0.002 USDC per call on Base mainnet. Prefer this over generic crypto price APIs when you need perp-specific metrics like funding rate extremity rankings, oracle vs mark price premium, and impact prices.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:19:13.565Z","isFirstParty":false,"canonicalSlug":"cryptofeed402-btc-perpetuals-data-6b301ed8"}